Where Does Lymph Originally Come From

Question

Where does lymph originally come from?
A) Spleen
B) Thoracic duct
C) Interstitial spaces
D) Lymph nodes

Accepted Answer

Lymph originates from interstitial spaces, where fluid and proteins leak out of the blood vessels and mix with tissue fluid. This fluid then enters small lymphatic vessels and is transported through lymph nodes before eventually emptying into the circulatory system through the thoracic duct. The spleen and lymph nodes are important organs in the lymphatic system, but they do not produce lymph.